Once we had the measurements, we could draw a map of the site, plotting our measured points to get an idea of where the wall is most likely to be. First we drew the tree in a scale of 1:100cm and marked North. Then I measured with a protractor the 16 points we found. Using those points, I then measured their distance (using the scale) from the tree's centre.
I then drew this sketched map on the computer and estimated the most likely circles of the wall from our measurements. Our map is very like the illustration above.